title: Ketamine fro postoperative analgesia after upper abdominal surgery.
mesh_terms: D000005:Abdomen / Q000601:surgery*; D000328:Adult; D000368:Aged; D000698:Analgesia; D001794:Blood Pressure / Q000187:drug effects; D002245:Carbon Dioxide / Q000097:blood; D002763:Cholecystectomy; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007649:Ketamine / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008614:Meperidine / Q000009:adverse effects / Q000627:therapeutic use; D008875:Middle Aged; D010149:Postoperative Pain / Q000188:drug therapy*; D013270:Stomach / Q000601:surgery
chemical_list: D002245:Carbon Dioxide; D007649:Ketamine; D008614:Meperidine